Secondary Progressions
Secondary progressions take the day-for-a-year rule from old astrology and turn it into an inner clock. The thirtieth day after your birth becomes a portrait of your thirtieth year — same ephemeris, slowed down to match a human life. Progressed Sun creeps a degree a year. Progressed Moon walks through a sign in roughly two and a half. This is not what is happening to you. It is what is ripening inside you.
The day-for-a-year rule
Take the date and time exactly N days after your birth, where N equals your age in years. The chart for that moment is your progressed chart for the current year. We use Swiss Ephemeris with a fractional-day calculation, so the progression is precise to the hour. Slow planets barely move across decades; the Moon, Sun, Mercury, Venus and Mars carry most of the signal.
What it shows about you
The progressed Moon names the emotional chapter you are in — its sign and house tell you what your feelings are organising themselves around right now. A progressed Sun ingress into a new sign is a thirty-year shift in core orientation; people often feel the climate change without naming it. Progressed inner planets describe how your way of speaking, loving and acting is quietly evolving. The body keeps the natal map; progressions show how it learns to wear it.
Reading the result
Start with the progressed Moon: its sign, its house, the next aspect it is forming. That is the chapter title of the next two to three years. Then check whether any progressed inner planet is changing sign or house this year — these are the rare quiet hinges of a life. Finally read the progressed lunation phase against the natal one. The phase tells you which arc of becoming you are in, from new to balsamic.
Progressions vs transits
Transits are weather — outside, often loud, frequently brief. Progressions are growth — inside, slow, usually unnoticed until you turn around. Many astrologers read them as a pair: the progressed chart describes the chamber you are in, the transits describe who is knocking at the door. Solar Arc directions, on the next page, are a third voice — bigger steps than progressions, usually hitting hard once or twice a decade.
Frequently Asked Questions
Why a day for a year?
The rule is ancient — Ptolemy used something like it, the Renaissance formalised it. There is no mechanical reason it should work, only the long observation that it does. Treat it as a symbolic mapping: the slow ephemeris of the first months becomes the rhythm of a life.
Birth time required?
Strongly recommended. Without an exact time the progressed Moon is uncertain by hours of arc, which can place it in the wrong house. Sign-level reading still works approximately, but the precise inner clock requires a known birth minute.
How often should I check it?
Once or twice a year is plenty. Progressions move slowly — the progressed Moon shifts about a degree a month, everything else far less. Daily checking will show you nothing new and turn a slow signal into noise.
Are tertiary or minor progressions on this site?
Not yet. We compute classical secondary progressions because they have the longest track record and the cleanest signal. Tertiary and minor progressions belong to a more specialised practice; we may add them later if there is interest.